ABSTRACT
We perform detailed time-resolved photoluminescence (TRPL) measurements on coevaporated CuInSe2(CISe) thin films with a lateral gradient in the composition. The dynamics of minority carriers in bare absorber layers is compared with that of CISe/CdS samples and complete solar cells. The observed increase in the carrier lifetimes for the cell-like film structures is explained by surface recombination effects.
